Acetylene generator



March 3o 1926. 1,578,725

l. M. HACKNEY ACETYLENE GENERATOR Filed August 6, 1920 3 Shee'fs-She'ei'l l "lllllll" l I .l l

/fb ATTORNEY.'

March 30 1926. A 1,578,725

l. M. .HACKNEY ACETYLENE GENERATOR Filed August 6,' 1920 3 Sheets-Sheet 2 WITNESS.-

' INVENTOR.

v /da f/aa/ 41/BY W@ /k A TTORNE Y.

March 30, 1926. 1,578,725 l. M. HACKNEY ACETYLENE GENERATOR Filed August 6. 1920 3 Shee1',s-.'Sheell 5 WITNESS: A INV EN TOR.

xvention, i

vPatented Mar. 30, 1926.

UNITED STATES N 1,513,725 PATENT OFFICE.

ISAAC 1I. HACKNEY, OF WICHITA, KANSAS.

AcnrYLnNn GENERATOR.

Application led August 6, 1920. Serial No. 401,707.

feeding of carbide into the water of a generating chamber.

The object of my invention is to provlde a novel apparatus of the kind described,

which is simple in construction, cheap to make, reliable in operation, durable and not liable to get out of order, which will retain the gas pressure in the Yenerating chamber at substantially a preetermined amount, which can ."readily be adjustedto operate under differentv pressures, without stopping the operation ofthe apparatus,and which is efficient in operation.

' My invention provides further novel valve mechanism for controlling the passage ofy gas from the generating chamber tothe dry gas container.

My invention provides still further novel means for regulating the feed of carbide into thewater. i

My inventionl provides still further novel means for controlling the carbide feeding mechanism.

The novel features of-my invention are hereinafter fully described and claimed.

In the accompanying drawings, which illustrate the preferred embodiment of my in- Fig. .1l isa view, partly in elevation, partly in l,veritical section and partly broken away, of my improved acetylene generator.

Fig. 2 is`- a top view of the same.

Fig. 3 is a 'horizontal section on the line 3-3 of Fig. .1. p A

Fig. 4 is an enlarged cross line 4 4 ofFig.' 1.- l

Fig. 5 is an enlarged vertical sectional view of the carbide feeding mechanism and parts connected therewith. i

Fig. 6 is an enlarged crossfsection cnt the line 6 6 of Fig. A1.

Similar'v reference --characters designate similar parts in the different views.

1 designates the generating chamber, which may beof any desired form, and

section on the which is ada ted to contain water 2, into which the car ide?, is fed for the production of the acetylene gas. is held in the hopper 4 having a conver ing bottom provided at its lower end wit a dischar e opening, and supported at its upper en by an internal annular flange 6 provided on the under sideof the'generating chamber cover 7, which has a vertical screw-threaded opening through which carbide is fed into the hopper, the opening being normally closed by means of a screw plug 8. The cover 7 is preferably removable and is clamped to the body by means of bolts 9.

The side wall of thechamber 1 is provided -witha water inlet 10 normally closed by a removable plug 11 and through which the water is poured into the generating chamber, -1.

For dumping the carbide 3 into the water 2, I provide a valve, preferably'comprising a scoop-shaped bucket 1,2, which is tiltably mounted on a horizontal pin 13, which eX- tends through opposite walls ofthe bucket 12, and which is mounted in the lower' end The carbide 3 l of an inclined plate 14. the upper endv of which is attached to the hopperl 4. The bottom of the bucket 12 is inclined as shown in solid lines in Fig. 1, and in dotted lines in Fig. 5, when in .the dischargevposition of is inclined so as to discharge carbide on the l bottom of the bucket when the latter is swung from the discharge -position to the position 'shown in 'solid lines in Fig. 5.

There is a space 16 betweenthe discharge end of the false bottom' 15 and Ithe bottom of the bucket 12 through which the carbide passes. In order to prevent the carbide from -the bucket. lThe bottom of the bucket is loc clogging in this narrow space, I provide means for poking the carbide through said space when the bucket 12 is swinging to the discharge position. This poking means comprises preferably a resilient member 17 having one end rigidly secured to the hopper 4 and having its lower end adapted to enter the space 16, so as to push carbide therethrough. v

When the bucket 12 is in the dis-charge position, carbide will pass from the hopper 4 onto the horizontally disposed false bottom 15 and will be retained thereon. When tlfelbucket 12 is swung from the discharge position, to the position shown in solid lines in Fig. 5, the carbide will slide from the false bottom 15 onto the bottom of the bucket, and when the bucket has again been swung to the discharge position, the carbide which is on the bottom of the bucket will be dumped into the water 2, thus generating gas an producing a pressure'in the generating chamber 1.

The amount of carbide discharged at each time into the water will depend upon the size of the space 16. i

For tilting the carbide holder 12 to and from the discharge position by means controlled by gas pressure, I provide suitable means which may consist in the following described parts.

Mounted on the cover 7 is a closed receptacle 18 having a removable cover 19, which may be .fastened to the body of the receptacle by bolts 20, and which is provided with a screw-threaded hole in which is normally fitted a screw plug 21. By removing the screw plug, water or other sealing liquids, may be poured into the receptacle 18, until it reaches the level of a screw-threaded hole in the side of the receptacle, which hole is normally closed by means of a screw plug 22, Fig. 1.

The receptacle 18 near its lower end is provided with adrainage outlet normally closed by a removable plug 23. v

The receptacle 18 has in its bottom a vertical'central hole through which extends a gas conductor'comprising a vertical pipe ,24,

having an annular flange 25, which'bears against the upper side of the bottom of the receptacle 18, and which has an externally screw-threaded lower end fitted in a threaded opening in the cover 7, and onl which is mounted a removable lock nut 26, which bears against the under side of the cover 7, thus securely clamping the receptacle 18 to the cover 7.

. 1, which makes a restricted'passage for gas.

Mounted in the sealing liquid, 30, in the receptacle 18, is a gas bell 31, which encircles the conductor 24, and into which the upper end of said conductor discharges gas which is adapted to lift the gas bell 31, until the latter has its upwardV motion limited by means of a nut 32, which is fastened to the lower screw-threaded end of a vertical rod 33, the upper end of which is screw-threaded and extends through the top of the gas bell 3l, and through the lower end of a yoke 34, which is clamped to the gas bellv 31,l by a nut 35, mounted on the upper end o'f thel rod 33, and by a nut 36, mounted on the rod 33 and `bearing against the under side of thetop of the gas bell'31. v

The yupper end of the yoke 34 `is slidably mounted upon the vertical'reciprocative opi erating rod 37, having at its lower end under the top of the yoke 34 a head 38 by means of which the yoke 34 and with it the gas bell 3 1 and rod 33 may be lifted manually.

The rod 37 extends through a stuiling box 39 providedin the center of the cover 19. In the automatic operation of the apparatus, the rod 37 merely serves as a guide for the gas bell 31, through the intermediacy of the yoke 34. At such time, the rod 37 is held .1n a position in which the nut 35 will not strike the head 38 by a right-angled rod 40,

one arm of which is horizontally pivoted to the upper end of the rod 37, and the other arm of which is adapted to be swung to a y vertical position so as to rest upon the cover 19', as shownvin Fig. 1. The rod 37 adjacent to its `upper end is provided with a transverse pin 41, which forms a hand hold by which the operator may vertically re ciprocate the rod 37 for the purpose of vertically moving the gas bell 31, to effect a preliminary generation of gas in the generating chamber, when the machine is first started into operation.

The screw--threaded lower end of the rod 33 extends through one endv of a rightangledA rod 42, one arm of which is clamped to the rodl 38 by means of two nuts 43l and 44 mounted on the rod 33, and respectively secured in positionby lock nuts -45 and 46, Fig. 5. The other arm of the rod 42 is loosely fitted in' a slot 47, in la horizontal part of'a rightangled platev 48, which is secured to' one side of the bucket 12. Two pins 49 and 5() are mounted in the vertical arm of the rod 42 respectively above and below the plate 48.

The rod 33 extends through the conductor 24, coupling 27, and pipe 28. l/Vhen the gas bell 31 is lifted by gas pressure, the rod 33 is lifted and with it therod 42, thereby lifting the .holder12 from the discharge position to the position shown in solid lines in Fig. 5. When the bell 31 falls, the holderl 12 is swung to the discharge position shown inv solid lines in Fig. 1, and in dotted lines in Fig. 5, by means of the rod 33, rod 42, and bracket 48.

The cover 19 is provided with a threaded outlet 51, Fig. 1, in which isfitted one end of a line of piping'52 which discharges into sition.

pipe '54, which may be provided with a 'shutl off valve 55 and to which a torch 0r other device, not shown, may be applied for utiliz-V ing the gas. Y

The line of piping 52 adjacent to the container 53 is provided with a check valve 56 which opens toward the container 53. The lower end of the container is provided with a removable cap 57 having a drainage opening in which is normally fitted `a removable plug 58. The side of the container is also provided with a hole in which is normally fitted a, removable plug 59. In placing. water in the container 53, the plug 59 is removed and water is poured into the container until the water runs out of the hole from which the plug 59 was removed, upon which the vplug 59 is replaced.

In the line of piping 52 between the check valve 56 and the receptacle 18 may be provided a shut oli' valve 60, which when closed, closes the flow of gas through the piping 52 and renders the apparatus inactive. Normally the valve 60 is open.

Connecting the generating chamber and the container 53 is another gas conducting means comprising, preferably, piping 61 which discharges at its lower end into the gas container 53 below the level of the water therein and which is adjacent to the container 53 is provided with a check valve 62 which opens toward the container 53. The piping 61 is provided with-a T joint 63 having attached to it an elbow 64 in which is fitted a removable plug 65. lVhen the plug 65 is removed, water may be poured into the elbow 64. The water will pass through the piping 61 into the container 53. When the water emerges from the hole which normally contains the plug 59, the plug is replaced.

Forming part of the gas conducting `means now being described, is a valvecasing comprising a lower shell 66 mounted in the upper end of the T joint 63 and having a vertical .tubular seat 67, which has slidably fitted on it-and adapted toclose it a valve 68 having a cup shaped lower end fitted to the tubular seat portion and resting upon the up r end of the latter so as'to close said en when the `pressure in the generating chamber 1 is below apre-determined amount. The inner wall of the cup shaped lower end of the valve 68 has vertical grooves 69, Fig. 6, through which gas may pass when the valve is in the open po- The valve 68 has its upper end attached to the center of a horizontal diaphragm` 70, which at its edges is clamped between the ber 1.

ing a' full upward stroke. lamount of water is placed in the chamber lower shell 66 and an upper shell- 71, the lower end of lwhich has threaded connection with the upper end of the lower shell 66. Suitable means is provided for holding the valve68 'closed until a redetermined pressure on the underside of t e diaphragm 70 lifts the valve to .the open position. Such holding means may be adjustable, so that the re-determined pressure required to open' tie valve may be changed as. desired. For this 4purposemay be provided-a' vertical coil spring 72, the lower end of which bears against the upper side ofthe central portion ofthe diaphragm 70, and the upper end of which supports a plate 73 against the upper side of which bears the lower` end of a vert-ical adjustable screw 74, which is fitted in .a threaded hole in the upper end of the shell 71. The latter may have removably fitted on it a screw cap which normally covers the head of the .pr'ojecting screw 74. The screw 74 is accessible, on removing the cap 75, from the exterior of the apparatus, so that the tension of the spring 72 may be changed, without shutting down the-apparatus, so as to' change the predetermined pressure at which the.' valve 68 will open.

Attached to one side of the lower shell 66 is a T joint 76 to which is connected .an ordinary pressure gage 7 7 4A pipe 78 connects the T joint 76 with the generating lcham- In the operationof the invention, to ob` tain a preliminary working pressure in the container 53 the valve 60 is opened, and thev valve 55 is. closed. The operator attaches 'I to the pipe 54 the torch provided with the burner tip that he desires to use for the particular purpose in view.

A supply of carbide is placed in the hopper 4, and the nut 32 is adjusted so as to limit the upward movement of the bell 31 to apoint at which a Asmall amount of carbide, preferably from one fourth to one half an ounce, will be dumped into the-bucket 12 from the plate 15. By adjustment such that y small charges are dum ed, the oscillations of the bell 31 and bue et12 will be more frequent, andthe fessure retainedmore uniform, than wit an adjustment for larger charges. l

Water `is placed .in the container 53, to prevent backfiring. The generating chamber 1 is filled with .water to the level of the inlet 10, and sufficient water should be placed in the chamber `-18 to insure the bell 31 mak-l If a larger 18, justa little more pressure is required to lift the water to permit the gas to blow through it.

The angle rod 40 isturned at right angles to the position shown in Fig. 1, and the rod -37 is drawn upwardly, thereby lifting the yoke34, and with it'the rod 33 and bell '31 -until the nut 32 strikes the lower end of I It will contact with the upper'end of the rod 33 atnd will force the latter and with it the bell 31v downwardly to the position shown in dotted lines ming. 5, in which position the charge ofcarbide will be dumped from the bucket 12 into the water lin the generating chamber 1. The carbide in the water will at once generate gas and 'p will continue such generation for a consid'-v erable time after being dum ed.

The o eration just described is re eated until sucicnt pressure is developed, or instance ten pounds, in the generating chamber to open the valve 68 wide enough to supply the gas container 53 with the amount of gas pressure required -for use in the torch. This pressuremay be regulated by regulating the adjusting screw 74. After such adjustment, the cap 75 is replaced.

The gas which-is generated will pass from the generatin chamber 1 through the pi e 28, and aisot rough the hopper 4 into t e coupling 27, and from thence will pass through ,the small opening in the ring 29 into the pipe 24, and thence into the bell 31. At' each dumping of the bucket 12, moregas is evolved than is required to lift the bell to its Iuppermost position'.

When sufficient pressure vaccumulates in the bell 31 to lift the bell, the water column around the bell ywill be lifted and will spread over the top of the bell, and the increasing pre-:sure in the bell, due to the constant generation of the gas from the dumped'carbide, will cause the gas in the bell to suddenly burst through the water and to pass above the bell 31 and through the pipe52 into .the

container 53.

To liftl the bell, the pressure therein be enough to lift the weight of the bell, the water in chamber 18, the rod 33, and to swing the bucket 12 soas to discharge a charge from the hopper into the bucket 12.

As soonv as the as bursts through the water, the weight 0% the bell, the-water on it, and the rod 33, will cause the bell to instantly drop, as the gas from the charge that has been previously dumped from the bucket'into the water can not enter the bell through the restricted opening in the ring 29 fast enough to overcome this weight at the time. The falling bell will swing the bucket 12 so as to dum vthe last charge therein into the water in the ,generating 'chamber 1, thus keeping up the continuous supply of gas lowinfr through the pipe 28, hopper 4, coupling 27, and pipe 24.

and 24 into the gas bell 31, and the The action just described will remain continuous, as long as the valve' 55 is o n, and the torch is being used to take gas trom the container 53. The valve 55 is opened as soon as the pressure in the generator chainber 1 and container 53 is at thedesired working pressure, which, as stated before, is regulated by the adjusting screw 74, which con trols the valve 68.l a lVhen the pressure of the gas in the chamber l opens the valve 68, the gas will pass into the container 53, vthrough the pipe 61, past the clieckvalve 62. The pressure in container 53 will soon be as great as ink chamber 1. When the valve 55. is opened and gas isdrawn from the container 53 for use in the torch, the pressure in container 53 and chamber 1 will lower, thus permittin the valve .68 to move toward the closed position, thereby restricting the volume of gas' flow through the pipe .61 into the container 53. In the meantime', however, gas is constantly being formed in the chamber 1 and is always flowing through the hopper 4 and pi es 28 e l will consecutively be rising and drop ing so as.

to keep up the dumping of carbi einto the bucket and from thence -into the water.

'When the pressure has fallen in the container 53 to a predetermined oint, the gas in the 'pipe 52 will pass the c eck valve -56 and will enter the container 53, thereby increasing the pressure therein, and in the chamber 1, thus e'ecting a wider opening of the valve 68, so that more volume `of gas will enter the container 53 through the pipe 61.

.In this manner `a substantially uniformv pressure is maintained in the chamber 1 and container 5 3, as .1on1T as a uniform amount of gas is being withdrawn through the open valve 55. Thev larger amount of gas entering the `container 53 will pass through the pipe ,61. The function of the gas passing through the pipe 52-is mainly to keep the bell A31 working to supply carbide to the chamber 1 and to'retain more uniform the pressure in container 53, the main body of gas used being supplied through the pipe 61 past the valve 68, which is constantly open to a, more orA less extent, as long as the machine is in operation.

By setting the nut 32.: so that small charges of carbide are dumped, the reciprocation of the bell' 31 and the dumping of carbide will be loftenertha-n when the nut 321s setto effect the dumping of larger charges, but the pressure maintained in the container 53 and chamber 1 will be more uniform.

As soon asthe valve 55 is closed, or the flow through the torch is turned ofi', the operation of the 'machine automatically ceases, without-'any appreciable increase of pressure inthe chamber 1 resulting. This is for the reason that in order for the gas bell to opiao erate to discharge-carbide into the bucket v12 and to dump the charges into the water,

. the bell must continue 4to make full strokes upwardly and downwardly, and to lift the lbell to effect a discharge of gas therefrom into the'pipe 52, there must be less pressure in, the latter pipe and above the bell than inthe chamber 1, correspondin to the presv4sure'required to'` lift the bell, t e column of water in the chamber 18, therod 33, and to swing the bucket 12 to discharge the carbide from the p1ate15 into the bucket 12.

If gas is not being taken from the con` against the load and pressure from above.

As soon as the valve 55is opened again, and gas withdrawn therethrough, the pressure will lower` in the container 53, andf the valve 68 will close slightly, vand gas will begin to pass from 4the pipe 52 into the con-A l *.tainer 53, the'pressure in the pipe 52 will vl5 tainer 53. When the pressure above the bell' 31 lowers to a point that the pressure under the bell will lift the bell to discharge gas therefrom, the operation of the bell will be resumed, as above described.

Assuming that it re uiresa pressureof two to discharge a charge' into the bucket, then the pressure in the chamber 1 must'be 'in excess of twopounds greater than the pres- ,sure above 4the bell in order to permit gas topass from the bell into the pipe 52.v Also, the pressure in the container 53 must lower below the pressure in the pipe 52 to permit gas to pass the check valve 56 into the container 53. When this condition occurs, as it does yright along, when the valve 55 is open, the valve 68 will move toward the closed position, thus restricting the flow through the pipe 61, and this deciency will be made up by the gas entering the container 53 through the pipe 52, the evolving of gas in the chamber 1 being continuously effected by the carbide which has already been fed into the water. Thus the pressure in the container 53'will, during the operation of the machine, with the valve 55 open, bc slightly below the pressure in the chamber 1, and slightly above and slightly below, consecutively, the pressure in the pipe 52. The variation, however, of pressure in the container 53 will be relatively slight and will not be noticeable in the operation of the ounds to lift the ell 31, the water inthe c amber 18, and to swing the bucket 12 torch. If a larger tip on the torch is used,

the bell 31 will operate oftener to supply more carbide to the chamber 1, and 1f a smaller tip is substituted, the bell will operate less often tovreduce the dumping of carbide. t

A material increase of pressurev in the chamber 1 can not occur, as, when the valve 55 is shut, the pressure accumulating in the 'container 53 wouldv prevent gas passing from the ipe 52 into the container, and the bell wou d stop lifting, dueto accumulated gas pressure, produced by the last gas burst through the water, a-bovethe bell together with the weight of the latter and thewater in the chamber 18 to be lifted. The bell would stop the feeding operation, and the small amount of gas generated from the carbide Which had already been fed would not produce an appreciable increase in pressure.

After the preliminary manual starting of the operation, `as described, the angle rod 40, is turned to the vertical position, shown in Fig.' 1', in which position, the rod 37 will be held4 out ofthe path of the rod 33, so that the operation of the latter would not be interfered with.

The nut 32 is not for the purpose of shutlimiting the upward movement of the bell .31 to the. position in which the desired .always pass into the hopper 4 from the chamber 1, and from the hopper 4 through the coupling 27 into the pipe 24- When it is desired to cease operating the machine, the valve 60 may be closed, thereby stopping the operation of the gas bell and the carbideV feeding operation. The same eEect is obtained by closing the valve 55.

In starting the machine, it is only needed to. manually reciprocate the bell 31 in the manner already described until gas begins to force the water out of the bell and to burst through the water. After this, the machine will operate automatically and the valve 55 may be opened. It is'preferable, however, in order to have a full working pressure, as soon as the torch is to be used, to manually operate the bell until the valve 68 opens at the predetermined pressure. As soon as the valve 68 opens, the flow ywill begin through the pipe 61, and will diminish through the pipe 52, the operation of the bell 31 slowing down as the flow increases through the pi e 61.

I do not limit my invention to the structure shown and described, `as many modifications, within the scope of the appended claims, may be made without departing from the spirit of my invention.

What I claim is 1. In an acetylene generator, a gas con tainer having an outlet for gas, a gas generting gas oli' from the pipe. 28, but only for 1 i the'generating chamber and discharging into said gas container, means for reducing the How in one of said conducting means when the pressure in the generating chamber is below a pre-determined amount and which permits the flow when the pressure reaches said amount, the other conducting means being adapted to contain a sealing liquid, 'a gas bell in said liquid sealing means arranged to receive gas and to be lifted thereby and to discharge the gas so received through said sealingliquid, andv means actuated by movement of said gas bell for actuating the carbide feeding means.

2. In an acetylene generator, a gas container having an outlet for gas, a generating chamber arranged to contain water, means for feeding carbide into the water, two gas conducting means .connected with the generating chamber and discharging into said gas container, a valve for closing one ofsaid conducting means, means for respectively opening and closing said valve when tht` pressure in the generating chamber rlses to and falls below a pre-determined amount,

the other conducting means being adapted vto contain a sealing liquid, a gas bell in said liquid sealing means arranged to receive gas assind' through said other conducting means xfrom the generating chamber and to be lifted thereby and to discharge the gas so received through said sealing liquid, and means actuated by movement of the gas bell for actuating the carbide feeding means.

3. In an acetylene generator, a gas container having an outlet for gas, a gas generating chamber arranged to icontain water, means for feeding carbide 1nto the water,

'gas conducting means connected with the generating chamber and discharging into said container and including a closed receptacle adapted to contain a sealing liquid and ,rovided with a gas outlet above said sealing iquid and having a gas inlet, a gas bell in said sealing liquid into which the said inlet discharges, the gas bell being arranged to be lifted by the gas received and to discharge the gas through said liquid, and means actuated by movement of said gas bell for actuat ing said carbide feeding means.

4.' In an acetylene generator, a gas gene".` ating chamber arranged to contain water. means for feeding carbide into the water, a closed receptacle adapted to contain a sealing liquid and having an outlet above -said liquid, a gas conductor connected to said generating chamber and discharging into said receptacle, a gas bell in said sealing liquid into which said conductor discharges arranged to be lifted by the gasit receives and to discharge said gas around its lower end through said liquid, a gasl container, a con,-

ductor connecting said outlet andisaid con-v tainer, and a member connected to and movable With said gas bell extending'through said first named conductor and connected with and adapted to actuate said feeding means.

5. In an acetylene generator, a gas generating chamber arranged to contain water, means for feeding carbide into the water, a closed receptacle adapted -to contain a sealing lliquid and having an outlet above said liquid, a gas conductor connected with said generating chamber, a gas bell in said liquid intov which said conductor discharges arranged to be lifted by the gas it receives and to discharge the gas around its lower end i through said liquid, manually operated means for vertically moving said gas bell, a gas container, a conductor connecting'said outlet andsaid container, and means actuated b movement of the gas bell for operating said carbide feeding means.

6. In an acetylene generator, a gas generating chamber arranged to contain water, means for feedingjcarbide intofthe water, -a closed receptacle adaptedto'contain a Sealing liquid and having a gas outlet above said liquid, a gas conductor connected withsaid generating chamber, a gas bell in said liquid into which the gas' conductor discharges arranged to be lifted by the gas it receives and to discharge the gas around its lower end through the liquid, adjustablemeans for limiting the upward'movement of the gas bell, a gas container, a conductor connecting said outlet and said container, and means actuated by movement of the gas bell for operating said carbide feeding means.

7. In an'acetylene generator, a gas genl erating chamber-arranged to contain Water,

means for feeding carbide into the water, a closed receptacle adapted to contain a sealing liquid, and-having a gas outlet above said liquid, a gas conductor connected with the generating chamber, a gas vbell in said liquid arranged to receive gas from said conductor -and to be lifted by the gas and to -dischargethe gas around its lower lend through the liquid, means extending through said conductor and connected to and operated by movement of thegas bell for actuating said carbide feeding means, a gas container, a conductor connecting said outlet and said container, and manually operated means for vertically moving said gas bell.

8.111 an acetylene generator, a gas generating chamber arranged to hold water, means for feeding carbide into the water, a closed receptacle adapted to contain a sealing liquid and having an outlet above the liquid, a gas conductor connected with the generating chamber, a gas bell in said liquid into which the-conductor discharges 'arranged to be lifted bythe gas and to dis-l lio - the liquid, means actuatedby movement of the gas bell for'operating the carbide feeding means, a gas container arranged to holda 1 q uid, and a conductor connected with said outlet and discharging into the as container below the level -of the liqui in the container. v

9. In an acetylene generator, a gas generating chamber arranged to hold Water, means for feeding carbide into the water, a closed receptacle adapted to contain a sealing liquid and having a gas outlet above said liquid, a gas conductor 'connected with the generating chamber, a gas bell in said liquid' into which the conductor discharges arranged to be lifted-by the gas it receives and to discharge the lgas around its lowerv end through the liquid, means actuated by movementof the gas bell for operating the carbide feeding means, a gas container adapted to contain liquid,a conductor connected with said outlet and discharging into the gas container below lthe level of -the liquid therein, and manually operated means for vertically moving said gas bell.

10. In an acetylene generator, a gas generating chamber arranged to hold water, means for feeding carbide into the water a closed receptacle adapted to contain asealin'g liquid and having a gas outlet .above the liquid, a gas conductor connected with the generating chamber, a gas bell in Said liquid into which said conductor Adischarges arranged to be lifted by the gas it receives and to discharge the gas around its lower end through the liquid, an operating member connecting the gas bell and the feeding means, a gas container, a conductor connecting said outlet and said container, and a manually operated memberl reciprocative in said receptacle and having means for engaging and vertically moving said gas bell.

11. In an acetylene generator, a as generating chamber arranged to hol water, means for feeding carbide into the water, a closed receptacle adapted to contain a sealing liquid and having a gas outlet above the liquid, a gas conductor lconnected with said enerating chamber, a gas bell in said liqui into lwhich the conductor discharges arranged to be lifted by the gas itreceives and to discharge the gas around its lower end through the liquid, an operating member extending through said conductor and connected with and movable by movement of the gas bell and arranged to operate the feeding means, a gas container, a conductor connecting said outlet and said container, and a manually operated member reciprocative in said receptacle and 'arranged to engage Vand vertically move said'gas bell.

' Intestimony whereofI have signed my name to this specification.

ISAAC M. HACKNEY. 

